"When Duty whispers low, 'Thou must,'
The youth replies, 'I can.'"

These lines seemed to Oliver Wendell Holmes, the moment he saw them, as if they had been "carved on marble for a thousand years." Emerson's poetry does not pulsate with warm human feeling, but it "follows the shining trail of the ethereal," the ideal, and the eternal. His prose overshadows his poetry, but no one without natural poetical ability of a high order could have written the lines:—

"O tenderly the haughty day
Fills his blue urn with fire,"

or even have seen

"The frolic architecture of the snow."

GENERAL CHARACTERISTICS.—The central aim of Emerson's writing is moral development. He is America's greatest ethical teacher. He thus voices his fixed belief:—

"A breath of will blows eternally through the universe of
souls in the direction of the Right and Necessary."

This belief gives rise to his remarkable optimism for the future, to his conviction that evil is but a stepping stone to good.

In a material age he is the great apostle of the spiritual. "Will you not tolerate," he asks, "one or two solitary voices in the land, speaking for thoughts not marketable or perishable?" To him "mind is the only reality," and his great man is never the one who can merely alter matter, but who can change our state of mind. He believed in reaching truth, guided by intuition. He would not argue to maintain his positions. He said that he did not know what argument signified with reference to a thought. To him a thought was just as natural a product as a rose and did not need argument to prove or justify its existence. Much of his work is tinged with Plato's philosophy.

Of all American writers, he is the most inspiring teacher of the young. One of his chief objects is, in his own phrase, "to help the young soul, add energy, inspire hope, and blow the coals into a useful flame; to redeem defeat by new thought, by firm action." John Tyndall, the eminent English scientist, declared that the reading of two men, Carlyle and Emerson, had made him what he was. He said to his students: "I never should have gone through Analytical Geometry and Calculus, had it not been for these men. I never should have become a physical investigator, and hence without them I should not have been here to-day. They told me what I ought to do in a way that caused me to do it, and all my consequent intellectual action is to be traced to this purely moral force." After hearing one of Emerson's lectures, James Russell Lowell wrote, "Were we enthusiasts? I hope and believe we were, and am thankful to the man who made us worth something for once in our lives."